But why use ModCrete AAC Blox?

ModCrete AAC Blox are the best the industry has to offer and is equipped with a lot of benefits over the conventional clay bricks.


High Strength

High pressure steam curing autoclaving process gives AAC unmatched strength to weight ratio, which far exceeds the Indian Building code requirements

Light Weight and Seismic Resistant

AAC blocks have a density range of 451 kg/cum to 750 kg/cum. This results in total cost savings as well as a faster construction period. Light Weight blocks reduce mass of the structure, thus reducing impact of an earthquake on the building. Non combustible nature of blocks provides and advantage against fires, which commonly accompany an earthquake.

Cost Effective

Being lightweight, AAC drastically reduces the dead weight of building, resulting into reduction in steel (up to 20%) and cement (up to 25%) structural cost saving. Lighter product reduces transport costs as well being 15 times the size of a clay brick, AAC wall construction involves 1/15 of joints, thus an overall mortar saving up to 66%

Sound Proof

AAC walls have an excellent sound transmission class (STC) rating of 44. Which results to virtually soundproof interiors, which in turn provides Excellent Acoustic Performance.

Superior Durability

AAC blocks are highly durable and can bear adverse weather conditions. Furthermore, they are earthquake resistant. Being ultra-light weight helps AAC be long lasting. Regions of high seismic activity like Japan exclusively use AAC. As it has proven to withstand wind loads of category 5 tropical storms.

Fire Resistant

Best in class fire rating of 4 hours. The melting point of AAC is over 1600 celcius. more than twice the typical temperature in a building fire of 650 celcius.

Accurate Dimension

Its automatic manufacturing process gives AAC an exceptional dimensional accuracy & smooth surface, eliminating need of three-coat plaster walls and allowing for a final 6mm skim coat (putty/pop). Our AAC provides greater Design Versatility & Flexibility.

Thermal Insulation

It has highest thermal rating in the industry: R30! Thus, it provides well insulated interiors, keeping out warm air in summer and cold air in winters. AAC reduces Air conditioning cost upto 30%.


AAC blocks can be sawed, drilled, just like wood and hence they prove to be one of the most easy to use construction materials’. It facilitates easier fitting of plumbing, electrical and also wall


Eco Friendly

AAC is 100% Green Building Material & is a walling material of choice in LEED certified buildings. AAC is most energy & resource efficient in the sense that it uses least amount of energy & material per m3 of product. Unlike brick manufacturing process which uses previous top-layer agricultural soil, AAC uses FlyAsh (65% of its weight).

Termite & Insect Resistant

Solid wall construction and finishes which bond to the wall have no cavities for insects, termites or rodents to dwell in. This also eliminates entry points. Termites and ants do not eat or nest in AAC. Cannot be penetrated by termites or insects. Reduces need for pest control. Offers maximum protection against damage.

Faster Construction

AAC Blocks helps reduce the construction time by upto 20%. Different sizes of blocks help reduce the number of joints in wall masonry. Easy to install. It sets and hardens very quickly. Lighter blocks make construction easier and faster. 

Endless Savings

Increase in Carpet Area

With the use of MODCRETE AAC Blocks, the wall width can be optimized to create 2-8 % additional valuable floor space. More so, with reduction in dead load on structure due to light weight, the sizes of structural elements can be optimized to minimize wall thickness and create additional floor space.

Easy piping and cabling

Installation of plumbing pipes in kitchens, bathrooms for water and sewage can easily and manually be cut into the AAC wall, faster than in any other block work. Wires will be installed in grooves easily cut with a manual chasing tool, services such as pipes and cables can be installed after walls are ready.

Design Flexibility

AAC Blocks are available in various sizes, can cover the same area as up to 15 Red Clay bricks and by using thinner blocks (6” instead of 9” partition wall) leads to an increased carpet area between 3-5%. This provides filexability in design by providing walls independent of beams by virtue of its light weight.      

Saving in Steel

Steel is one of the major components of construction activity. So the amount of steel used depends on the load to be taken by the building, the dead weight of the structure and the super structure is also taken into consideration in the calculation of the steel requirement. The dead load of masonry work reduces by approximately 66% and structural steel can be saved up to 20% designing optimally depending on type of structure and soil.

Saving in Mortar

The bricks or blocks are used in walls and walls are mostly plastered with cement / sand mortar, the dimensions of the bricks/blocks play a very crucial role in determining the quantum of plastering material used. AAC Blocks are 7-15 times bigger than Red Clay Bricks resulting saving in mortar and substantial saving is achieved in plastering due to precision and consistency in dimensions. 

Good Sound Insulation

AAC can be used on buildings along rail tracks, main highways, airports, railway station. This is an ideal walling material for hospitals and schools. Huge savings is achieved by avoiding double/twin/cavity wall. 

Rapid construction

One solid AAC Block of 62.5 cm x 20 cm x 24 cm (0.03 Cubic meter) is equivalent in volume to approx. 15 standard bricks of 7.5 cm x 23 cm x 11.5 Cm (0.00198375 Cubic meter) yet less than 1/5 the weight, leading to fast laying. Using thin-set mortar in 2 mm (1/16”) joints avoids the time consuming handling and mixing of conventional mortar.

Good Thermal Insulation

Capital and running Cost of air-conditioning is reduced substantially due to high thermal insulation.

AAC Blocks v/s Clay Bricks

ParameterAAC BlockClay Brick
Structural CostSteel saving upto 20%No such saving
Cement Mortar for Plaster & MasonryRequires less due to flat even surfaces & less number of jointsRequires more due to irregular surfaces & more joints
Breakage and UtilisationNegligible breakage almost 100% utilisation is possibleAverage 10 to 12% breakage, so 100% utilisation not possible
Labour OutputApproximately double of conventional brickComparatively slow
Quality Uniform and consistentNormally varies
Efflorescence No such chance which improves the durability of wall along with plaster & paint in a long runMore chances are there
Fitting & Chasing All kind of fitting & chasing possible as per ISO:1905All kind of fitting/chasing possible
Carpet Area More due to less thickness of walling materialComparitively low
Storage Readily available at any time & any season in a short notice so no storage requiredParticularly in monsoon, stock at site is compulsory which block large working places
Maintenace Less due to its superior finishComparitively high
Soil ConsumptionZero soil consumption. Primary raw materials for AAC blocks is fly ash. This fly ash is ndustrial waste generated by coal based thermal power plantsOne sq. ft of carpet area with clay brick walling will consume 25.5 kg of top soil
Fuel ConsumptionOne sq. ft of carpet area with AAC blocks will consume 1 kg of pet coke with controlled bricks emissionOne sq. ft of carpet area with clay brick will consume 8 kg of coal without any contrl on emissions
CO2 EmissionOne sq. ft of carpet area will emit 2.2kg of CO2One sq. ft of carpet area will emit 17.6 kg of CO2
LabourOrganised sector with proper HR practicesUnorganised sector with rampant use of child labour
Production FacilityState-of-the-art factory facilityUnhealthy working conditions due to toxic gases
Tax ContributionContributes to government taxes in form of Central Excise. VAT and OctroiLesser contribution to government exchequer in terms of Taxes and Excise
Size600/625mm x 200/240mm x 100-300mm225mm x 100mm x 65mm
Variation in Size1.5mm(+/-)5mm(+/-)
Compressive Strength3-5 N/mm2 ( can be higher as per requirement) (can also be upto 10 N/mm2)2.5-7.5 N/mm2
Dry Density550-700 kg/m31800 kg/m3
Fire Resistance (8" wall)Upto 7 hoursUpto 2 hours
Cost BenefitReduction in dead weight leading to saving in steel, plaster and concreteNone
Energy SavingApproximately 30% fro heating and coolingNone
Raw MaterialFly ash, Sand, Cement, POP, Gypsum & AluminiumValuable Top Soil and Coal
Construction SpeedRapid constructionSlow construction
BreakageVery less breakageAbout 20-25%
Heat InsulationVery good insulationPoor insulation in comparision to AAC

Versatile Uses







Single and Multi Housing

Single and Multi Housing

Schools & Universities

Schools & Universities

Boundary Wall

Boundary Wall

Commerical Buildings

Commercial Buildings

Industrial Buildings

Industrial Buildings

Roof Installation

Roof Installation

Hilly Construction

Hilly Construction

Fire Resistant Solutions

Fire Resistant Solutions

Individual Housing

Individual Housing


The usage of AAC Blocks and the production process, both are environmental friendly in many ways which include the eco-friendly production, low carbon and smoke emissions, low effluent discharge, cheaper transportation, more usage of waste material and less water usage. This industry has been categorised as White Industry by the Central Pollution Control Board, Govt. Of India. For more details, read S.No. 16, under White Industry Category, with Type Code 4016, on Pg. 15, in this document.

Save Agricultural Soil

ModCrete AAC blocks use 65 to 70% of fly ash, wastage generated from thermal power plant. It does not required clay so no damage of agricultural land and soil.

Save Air Purity

Fly ash wastage is from thermal power plant mixes with environment and increase pollution, because of its use in ModCrete AAC blocks it helps to reduce the pollution.

Save Transportation Fuel

ModCrete AAC block are 3 times lighter than clay bricks and 4 times lighter than concrete blocks, so more number of blocks are transported in same vehicle which save fuel for transportation compared to clay bricks / Concrete blocks.

Green Building Certificates

Green building certifying organization like LEED, IGBC, BREEAM, DGNB, CASBEE Certify AAC blocks as a green building material.

Zero Pollution Production

AAC Block is a zero emissions and discharge industry, and is classified as a White Category industry. The production process itself requires at least 30% less energy compared to clay brick manufacturing and hence contributes directly to better carbon emission foot prints.

Less Water Requirement

As use of thin bed mortar does not require water curing and is cured naturally, the water consumption of installing AAC Blocks is significantly reduced. ModBond & ModPlast doesn’t need more than 24 hours of curing time, the water requirement is substantially reduced.